A 1920s Austrian gilt-bronze chandelier is suspended above a Jansen dining table and a set of Louis XV Jacob chairs (two are copies), covered in a bespoke Marino fabric; the custom-made silk curtains are based on an antique example.

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Muffy and Xavier Flouret worked with Peter Marino to create spirited interiors for their prewar New York apartment.

Living room walls covered in a Claremont brocatelle provide a vivid backdrop for contemporary art. An Elizabeth Peyton watercolor, a blue-tone Elliott Puckette canvas, and a bronze sculpture by Antoine Poncet make a lively trio over the fireplace; a vast Vik Muniz photographic work dominates the wall behind a Russian-neoclassical–style bench designed by Marino. The Evian box, a sculpture by Rob Pruitt, rests on a table by Arman.

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A watercolor by Peyton hangs above a Japanese black-lacquer tea cabinet; the custom-made curtains are of a plaid silk taffeta.

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A Donald Baechler painting overlooks the living room’s orange velvet sofa, designed by Marino, and a pair of 18th-century fauteuils by Georges Jacob; 19th-century Japanese red-lacquer stands serve as occasional tables, and the raffia-cotton rug is by La Manufacture Cogolin.

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Marino used an Edmond Petit striped fabric for the library’s walls and curtains; the drawing between the windows is by Dante Gabriel Rosetti, and the circa-1905 Viennese mahogany-and-brass desk is by Friedrich Otto Schmidt.

A Peyton drawing is displayed over the Flourets’ steel-and-brass bed, which is dressed in D. Porthault linens; the bed was designed by Marino, as was the horsehair bedside table, while the desk and chair are both circa-1930 pieces by Jean-Michel Frank.

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A mostly red canvas by Eric Porter plays off the riotous custom-made Pierre Frey fabric that sheathes the master bedroom’s walls; the 1950s leather-wrapped valet is by Jacques Adnet.

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The master bath, clad in Calacatta gold marble, features sconces by Jean Perzel, a Marino-designed vanity with parchment-faced drawers, and sink fittings by Dornbracht.